Across the U.S., female animals exposed to toxic chemicals are suffering from a flurry of health problems, from shrunken oaries to spontaneous abortions. 在美國，與有毒化學(xué)物質(zhì)接觸的雌性動(dòng)物正遭受許多健康問(wèn)題，從卵巢萎縮到自發(fā)流產(chǎn)。
The spermatozoids of primitive plants are often positively chemotactic, swimming toward the female organs in response to a chemical secreted by the latter. 較原始的植物的游動(dòng)精子有正向的趨化現象，總是游向由雌性器官所分泌的物質(zhì)。
